Apparatus for the manufacture of prussiate of potash



(No Model.)

APPARATUS POR THE MANUPAGTURB OPPRUSSIATE OP POTASH.

No. 310,376. Patented Jan. 6, 1885.

r u EL UNrTan STATES PATENT OFFICE.

ELLES R. CARHUFF, OF NEVABK, NEV JERSEY.

APPARATUS FOR THE MANUFACTURE OF PRUSSIATE OF POTASH.

SPECIFICATION forming part or' Letters Patent No.3l6,3'76, dated January 6, 1885.

Application liled October i), ISST?.

fo cr/Z wiz/0m t may concern.:

Be it known that I, ELLES It. Cani-inrit, a citizen of the United States, residing at Newark, in the county of Essex and State of N ew Jersey, have invented certain new and useful Improvements in Apparatus for the Manufacture of Prussiate of Potash; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable -others skilled in the art to which it ap pertains to make and use the same, reference being had to the accompanying drawings. and to letters of reference marked thereon, which form-a part of this specification.

lThe object of this .invention is to simplify and make more effect-ual the apparatus employed in the manufacture of prussiate of potash, and it consists of such arrangement, construction, and operation of the various parts as will be hereinafter set forth and claimed.

In the drawings, Figure l is a transverse section of a furnace with a side elevation of a retort or plot arranged therein. 2 is a front elevation of the mouth of the retort and part of the furnace. Fig. 3 is a top view of the clutch at the rear ofthe furnace. Fig. -lis a section through line 10 of Fig. 3, and Fig. 5 is a section through line w of Fig. l.

Similar letters ol' reference indicate like parts in each of the several figures.

Referring to the drawings, A is the retort, made of cast-iron, the form of which is elliptical, but maybe circular, if desirable, provided with an opening, B, in the neck thereof, and an elongated end, C, formed substantially as shown, having a lug or` feather, c. Vithin the retort are curved ledges or ribs a, formed similar to an S, preferably four in number, and placed equidistantly apart. curved ribs a are straight ribs a.

D is a coupling, by whichA the end C of the retort is firmly connected wit-h the shaft E, which turns in the bearing e, and having attached thereto a cog-wheel, F, or other suitable gearing for rotating the retort. The coupling D is composed of the parts d, cZ, and di, Figs. l, 3, and 4, held together by bolts, as shown. to receive the lug @,as shown in Fig. 4, by which the retort is prevented from moving longitudinally or laterallyindependent of the Between the- The part d has a recess, c2, therein (No model.)

ing on each side of the mouth of the retort oo are arms H, having gibs or supporting-pieces 11 near their upper extremity, Fig. 2, which bear against the sides of the mouth, supporting the same, said gibs being adjustable by means of the screws fi and inclined toward the rear of the furnace, as indicated in Fig. l, so as to prevent the contents of said retort from falling out or collecting at the mouth while revolving within the furnace. The retorts receive their motion through the gearing at the rear of the furnace, the points of bearing being without'the same, and placed at a suitable distance therefrom to avoid the intense heat thereof, especially the bearing and coupling at the rear, as indicated in Fig. l. The mouth of the retorts may be closed by adoor suitably hung, as will be readily understood.

The furnaces in which the retorts are placed may be larger or smaller, according to the number of retorts therein, preferably containing three, the furnaces being arranged back to back, with the gearing of the retorts so placed that they maybe rotated by a single shaft provided with gearing, or in any suitable manner.

rlhe roof of the furnace is constructed as shown in Fig. l, consisting of an arch of masonry, fire-brick preferred, the ends of said arch resting upon iron angle-plates j, Figs. l and 2, and provided at intervals with braces or stays It, either east integral with the iron angle-plates or bolted thereto, a small space being left between the arch and the stays to allow for expansion of the masonry.

In order that the retorts may be removedk from the furnace when unfit for use without tearing down t-he furnace, I divide the root` into several parts, preferably three, correspending to the number of retorts, with two or more braces, k, to each division, said braces being provided with eyebolts Z, Fig. 1, the divisions being made transversely from front to The retort is IOO - the rear of the-retort, thereby still further rear through thc masonry and iron plates. The arch resting upon the iron angle-plates, the stays being secured to said plate, the parts may be lifted off of the walls by tackle attached to the eyebolts, and replaced without disturbing or injuring the furnace, the con venience and economy of which are evident.

In order to thoroughly mix the charge in the retort, so that-it may be suiiiciently subjected to the heat, I employ ribs a a', cast on the inner surface of the retort, which form ledges, upon which the contents of the retort collect, and, being thrown off while the retort is revolving, become thoroughly mixed and fused. By having the ribs curved, as shown, Fig. l, while the retort is turning in the direction indicated by the arrows on Fig. 2, the contents or charge is pushed or thrown toward preventing the charge from collecting at or falling out of the mouth of the retort. Moreover curved ribs are much more durable, because stronger, than straight ribs, as is evident. rlhe friction and consequent wear is greatly reduced by employing but a single bearing-point at each endet' the retort instead of twoor more, as heretofore used.

Having thus described my invention, what I claim is- 1. A retort, A, provided with a hollow neck, an elongated end, C, having thereon a feather, as c, for the purpose herein set forth, and having within S-shaped ribs.

2. In combination, a retort, A, having on the elongated end thereof a lug, c, shaft E, coupling D, friction-roller G, and means for supporting the end of the retort, which turns on said friction-roller, all substantially as set forth.

3. In combination, a retort, A, shaft E, coupling D, friction-roller G, arms II, and adjustable gibs z', all as set forth.

4L. A retort, A, adapted to be used in the manufacture of prussiate of potash, having within curved ribs, as a, said curves being approximately S-shaped, all substantially as and for the purposes setrforth.

5. A retort, as A, having within S-shapcd ribs, as a, and straight ribs a', all substantially as and for the purposes set forth.

G. In combination, a furnace adapted to be used in the manufacture of prussiate of potash, having a removable roof, a retort, A, arranged and adapted to rotate within said furnace, a friction-roller, G, a coupling device, as D, and driving-gear, all substantially as set forth. y

7. In combination, a furnace adapted to be used in the manufacture of prussiate of potash, a retort, A, friction-roller G, means for supporting the end of the retort bearing on said friction-r0ller, a coupling device, D, and driving-gear, said retort rotating on a single bearing-point at each end thereof, placed outside ofthe furnace.

8. A retort adapted to be used in the manufacture of prussate of potash, the body of which is arranged within a furnace, one end bearing upon one or more friction-rollers, the other end being coupled with a shaft turning in a bearing, said shaft being provided with gearing, or otherwise adapted to receive motion from a driving-shaft with both the bearings outside ofthe furnace.

9. A retort approximately spherical, adapted to be used in the manufacture of prussiate of potash, having a non-perforated shell, and provided with elongated ends, one of which has an opening therethrough, substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this Sth day of October, 1883.

nLLns n. cani-turn.

Witnesses:

F. F. CAMPBELL, O. Dumm. 

